यदि (Z(x)=b-6x) रेखीय क्षय है और (Z(1)+Z(4)=90), तो (b) क्या है?
If (Z(x)=b-6x) is linear decay and (Z(1)+Z(4)=90), what is (b)?
Explanation opens after your attempt
C. (60)
Concept
(Z(1)+Z(4)=(b-6)+(b-24)=2b-30). From (2b-30=90), (b=60).
Why this answer is correct
The correct answer is C. (60). (Z(1)+Z(4)=(b-6)+(b-24)=2b-30). From (2b-30=90), (b=60).
Exam Tip
(Z(1)+Z(4)=(b-6)+(b-24)=2b-30) है। (2b-30=90) से (b=60) मिलता है।
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